People · Operator

William J. Porteous

Named in public records as an officer, director or promoter · active 2018–2019 · Software / Tech

1
Companies
5
Filings
$65.9M
Combined raised · real
Single
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Ursa Space Systems Inc.Software / TechSeries B$65.9M$9.5M2018
Operator network

William J. Porteous at the center, the companies they're named on, and every other operator named alongside them — an interlock map of shared founding teams, boards and funds. Name-matched, so treat as a research lead.

Mark Spoto · 8 companies · 1 sharedMark SpotoWilliam Porteous · 6 companies · 1 sharedWilliam PorteousChristopher Steed · 5 companies · 1 sharedChristopher SteedDaniel Freeman · 4 companies · 1 sharedDaniel FreemanTom Edwards · 3 companies · 1 sharedTom EdwardsNicole Robinson · 2 companies · 1 sharedNicole RobinsonPaul Graziani · 2 companies · 1 sharedPaul GrazianiAdam J. Maher · 1 companies · 1 sharedAdam J. MaherAdam Maher · 1 companies · 1 sharedAdam MaherChristopher J. Steed · 1 companies · 1 sharedChristopher J. St…Derek J. Edinger · 1 companies · 1 sharedDerek J. EdingerJulie Baker · 1 companies · 1 sharedJulie BakerJulie J. Baker · 1 companies · 1 sharedJulie J. BakerMark J. Spoto · 1 companies · 1 sharedMark J. SpotoTom J. Edwards · 1 companies · 1 sharedTom J. EdwardsWilliam Porteaus · 1 companies · 1 sharedWilliam PorteausUrsa Space Systems Inc. · $65.9M raisedUrsa Space Systems In…William J. PorteousWP
William J. Porteous Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

People named alongside William J. Porteous on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.

OperatorSharedTheir companies
Mark Spoto18
William Porteous16
Christopher Steed15
Daniel Freeman14
Tom Edwards13
Paul Graziani12
Nicole Robinson12
Julie J. Baker11
Mark J. Spoto11
Christopher J. Steed11
Adam J. Maher11
William Porteaus11
Julie Baker11
Adam Maher11
Derek J. Edinger11
Tom J. Edwards11

People are matched by normalized name across records; a common name may merge distinct individuals. Treat as a research lead, the same way modeled valuations are directional, not quoted.